Method of and apparatus for making paper cones



March 23 1926.r

' P. LE R. MCCALL METHOD oF AND APPARATUS Foa MAKING PAP ER y CONES 4 sheets-sheet 1 Filed OCT.. 6, 1925 70 a@ 777C/ www 79g@ QZ;

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March 23 1926.

P. LE R. MCCALL 'METHOD OF AND APPARATUS FOR MAKING PAPER CONES Filed Oct. 6, 1925 4 Sheets-Sheet March 23 1926.

P. I E R. MCCALL METHOD 0F AND APPARATUS FOR MAKING PAPER CONES Filed Oct. 6, 1925 4 Sheets-Sheet 5 March 23 1926.

P. LE R. MCCALL METHOD 0F AND APPARATUS FOR MAKING PAPER CONES Filed Oct. 6, 1925 4 Sheets-Sheet 4 gvwemtoz @da @ttm m15 ble,

y Fatented Mar. 23,1926.

d UNITED 'sifii'iasK PETER `Ln ROY' MCCALL, or RocxINGHAM, NORTH CROLINA.

METHODOF AND APPARATUS FOR MAKING .PAPER CONES.

Application led October 6, 1925. Serial No. 60,794.

To all lwhom fitmay zio-neem:

Be it known that I, PETER LE ROY MCCALL, ajcitizen of the United States, re-

Lsiding at Rockingham, in `the county of Richmond and State of North Carolina., have invented certain new and useful Improv-ements in Methods of and Apparatus lfor Making Paper Cones, of which the following is a specification.

Ihis invention relates to the manufacture of cones and tubes such as are used by cotton mills for winding yarns, and more particularlycto the manufacture of cones from approximately sector-shaped paper blanks.

In lmaking such cones, it has heretofore been customary to employ a rotary conical mandrel, such mandrel having a longitudinal slot in its surface, into which slot one edge of the sector-shaped blank is inserted, so that, as the mandrel is turned,'the blank,

.having been previously coated .with adhesive,

is wound upon the mandrel to form a cone.

Before such a cone is marketable, the ends must be trimmed ofi', on true transverse planes, to provide a neat, smoothly finished article, and in order that such trimming operation might be performed while the cone was still on the mandrel, it has been proposed to make the edge which is held in the slot of the mandrel somewhat shorter than the body of the cone, so that the trimming mi ht be done at points beyond the ends of suc edge or tongue. (See Smith Patent No. 886.884, dated May 5,1908.)

This method, however, proved undesirafor the reason that, in the finished cone, the edge or tongue referred to, which lies onthe inside of the cone, did not extend the fulllength of the cone, but terminated short of the base thereof. This produced a thin spot, which not onlyweakened the structure, but resulted in a cone which was slightly unbalanced, and whichctherefore -tendecl to vibrate when rotated at high speeds.

It has also been proposed to manufacture cones from blanks having a deckle or feather edge on the inside of the cone, for the purpose of giving a well balanced unform'cone smooth interior.

a theoretical standpoint, it has been found objectionable in practice, owing to the great diiculty of properly gripping andholding such a featheredge on the mandrel, and the impossibility of preventing such an edge from frequently becoming curled, puckered, torn or otherwise distorted, thus producing irregularities, and resulting in many defective cones;

The present invention seeks to produce a cone having all of the advantages of that resulting from the deckle edge method, but with none of the defects of suoli vmethod, and to this end I propose to construct a cone from a blank having the edge which lies inside of the cone consisting partlyof a deckle or feather edge, and partly of an edge of the same ,thickness as the blank. In this way, the deckle edge po-rtionserves ,to form a smooth and practically invisible joint or seam near the base of the cone, where smoothness is required, while, at'the same time, the thicker portion constitutes a tongue which can be firmly engaged in the usual slot of the Winding mandrel, the same as 1n the Smith patent above referred to, and the necessity for attempting to grip or hold the blank by a feather edge, with all its attendant difficulties, is thus obviated.

VVit-h the above end in view, it is the speciiic object of this invention to devise improved apparatus for making cones of the character above described, which apparatus shall be so desi ned as to'efectively position the special blan s on the mandrel, and properly wind them therearound, so as to produce mechanically perfect cones. An important feature of the invention is'the provision of means for wiping down upon the mandrel that portion ofthe blank having a feather edge, before the actua-l winding operation begins.

In order that thein'vention may be readily understood, reference is had to the accompanying drawings, forming part of this specification, and in which Fig. l is a plan view of a machine embodying the invention,

Fig. 2 is a side elevation thereof showing the parts in one position;

Fig. 3 is a similar view showing the parts in a different position, Acertain parts being omitted for the sake of clearness;

Fig.`4 is air end elevation on an enlarged scale showing the operating gearing andr associated `parts;

Fig. 5 is a fragmentary section on an enlarged scale substantially on the line 5-5 of Fig. 1, looking in the direction of the arrow;

F ig. 6 is a plan view of the improved blank from which the cones are made;

Figs. 'Z'v and 8 are inverted fragmentary perspective views on an enlarged scale showing the end side of the forming mandrel and associated parts, the parts being in different positions in the two views.

Figs. 9 and 10 are more or less conventional enlarged transverse sections through the forming mandrel and associated parts, the parts being in different positions in the two views and some of the parts being shown in dotted lines.

Referring to the drawings in detail, the machine shown in the drawings by way of illustration, rand embodying the invention, comprises a suitable bed plate or table 1 supported upon end plates or pedestal2, 3 and 4, as shown in Fig. 2.

Power-is supplied to the machine by means of a belt wheel or pulley 5 secured on the end of a shaft 6 journalled in the pedestals 3 and 4. This shaft also carries at its inner end a mutilated gear 7 having a few teeth on one side and the rest of its periphery being smooth, as clearly shown in Fig. 4. This gear cooperates with a mutilated or Geneva pinion 8 secured to a shaft 9, also journalled in the pedestals 3 and 4 and carrying at its outer end a large gear wheel A10. This gear wheel meshes with a pinion 11 secured to a shaft 12 mounted in standards or pedestals 4 and carrying at its inner end a conical mandrel 13 on which the cones are formed. Mounted to rotate freely on the shaft 12 adjacent the mandrel 13 is a drum 14 having at one end an annular flange or shoulder 15.

By reference to Figs. 7 and 8, the construction of the above mentioned drum and associated parts can be best understood. Pivotally mounted on a pin 16 in a notch formed in the shoulder. or flange 15 is a lever 17 having secured to its forward end a strip 18 of soft material such as leather, rubber, or felt, the lever and strip together constituting what I term a wiper.

A. pair of helical springs 19 engaging at one end a pin 20 carried by the lever 17, and

-held at their opposite ends by screws 21 adjustably mounted in an angle bar 22 secured to the drum 14 tend to force the Wiper into substantial contact with theconical surface of the mandrel. The rear end of the lever 417, however, carries a roller 23 which is manera 23 engages the cam track and thus holds the wiper away from the surface of the cone, as shown in F ig. 7, but when the drum 14 is rotated so as to bring the roller 23 to a position directly below the shaft 12, the shape of the cam track is such as to permit the wiper to move under the influence of the springs 19 into substantial contact with the surface of the mantlrel, as indicated in Figs. 2 and 19. ln order to oscillate the drum 14 and associated parte, as described, the drum 14 is provided at its end opposite the flange 15 with a pinion llieshing with this pinion is a curved rack 26 carried at the end of an arm 27 secured to a short shaft 28 journalled in bearing brackets 29. To tlie'other end of the shaft 28 is secured an arm 30, which arm, as clearly showii in Fig. 4, extends rearwardly and downwardly and is provided at its lower end with an elongated slot 31. Working freely in this slot is a pin 32 carried by a double Geneva pinion 33 mounted on a shaft 34.

Cooperating with this Geneva pinion is a mutilated gear 35 having a smooth periphery with the exception of a few teeth on one side.

The number of teeth on this gear are equal to the number of teeth on each side of the double Geneva pinion so that for each revolution of the gear the pinion 33 is turned through 18()o and then locked.

The gear 35 is secured to a shaft 36 journalled in a bracket 36a. On this shaft is also secured a pinion 37 meshing with a gear 38 secured to 'the driving shaft 6.

Also cooperating with the mutilated gear 7 on the shaft 6 is a second Geneva pinion 39, mounted on a shaft 40 extending longitudinally of the machine and carrying near its lefthan'd end a beveled pinion 41.

Mounted to slide on diagonally extending ways 42`supported by the table 1 is a carriage comprising a base plate 43. Depending from the bottom of this base plate is a lug 44 which extends through a slot 45 formed in the table 1 and projecting from one side of the lug 44 is a pin 46. A lever 48 also extends through the slot 45 and is provided at its lower end with a slot 47 working over the pin 46. This lever 48 is secured at its upper end to a shaft 49 journalled in bearing brackets 50, such shaft extending in a direction at right angles to the conical surface of the mandrel 13 as best shown in Fig. 1. At the end of shaft 49 nearest the mandrel is mounted a rod or finger 51 extending parallel with the conical surface 0f the mandrel. and carried by this finger at a point near the shaft 49 is a deflector 52, the purpose of which will be hereinafter described. Mounted in a horizontal position immediately under the finger 51. and with its edge adjacent to and parallel with the conical surface of the mandrel is a presser plate 53, carried by arms 54 secured to a shaft 55 journalled in standards 57 rising from a base plate 58 having a pair of slots 59through which pass bolts 60, by means of which such lbase plate is adjustably secured to the carriage 43. A spring 56 surrunds the shaft 55 and is secured to said shaft and to a fixed support in such a manc other end a crank arm`66. The end of this crank arm is connected with the lower .end of lever 48 by means of a link67.

The result of the construction just described is that as the shafts 40 and 64 rotate, the crank A66 causes the carriage 43 to reciprocate along the ways 42. At the same time the shaft 49 is rocked by means of the lever 48, which has a very limited movement due to the pin and slot 46 and 47, and thus causes the finger 51 to approach or move away from the presser platev 53, after the manner of pincer jaws, the finger and presser plate thus constituting a gripping device for engaging and feeding the blanks.

By reference to Fig.. 4, it will be understood that continuous rotary movement imparted to the shaft 6 will result, by virtue of the mutilated gears and Geneva pinions, in intermittent rotary motion being inrparted to the shafts 9 and 40, these shafts being locked by the Geneva pinions between successiveactuations. The exact relation and sequence of these movements will be briefly described later on in connection with the operation of the machine as a whole.

At one end of the table l is a platform' 69 on which the blanks or patterns are cut from a continuous strip of paper, the special Vshears or cutting mechanism employed forming no part of the present invention, and therefore not being illustrated. Suice it to say that the strip or web of paper .is fed forward intermittently by means of rollers, as indicated at 70, the paper having first passed 'through suitable paste applying mechanism so that when it arrives at. the platform 69, it is thorougp'mlyI wet and coated with paste. Secured to the end of the platform 69 is an 'extension 68 having a beveled edge 68a (see Fig. l), such edge being par- `vallel with the ways 42 and with the conical surface of the mandrel 13, so that when the carriage i'sin its forward position, as shown in Fig. 3, the edge of the presser plate 53 'lies in substantial contact with the beveled edge 68a of the extension 68.

ln order to produce improved cones of the character described in the preamble to this illustrated. As the crank continueslto turn specification, I make use of a blank having the lspecial novel shape shown in Fig. 6.

Byreference to this figure, it will be seen that the blank as a-whole`is what may be described as substantially sector-shaped.

The blank comprises a main body portion A havmg a curved or arcuate edge a which may be and preferably is of the extent of approximately a semicircle. One radial edge c of the blank is preferably a deckle edge so that a smooth joint or seam on the outside of the cone may be formed. This has long been the common. practice. The' Aother edge of the blank comprises a tongue e, the eXtreme center of the blank being preferably cut away, as indicated at d, and the a thin feathered ordeckle edge b at its end,

such edge preferably lying in line with and forming a continuationof the deckle edge c. Between the tongue e and flap B is formed a notch f so as to permit the flap B to move freely transversely of the blank relative to the tongue. The outer edge of the flap B constitutes a continuation of the arcuate periphery a of the blank.

Referring now to Fig. 1f I have indicated in dotted lines the appearance of the end of the paper`4 strip or web which has been cut by the specialv shears to form my improved blank. For the sake of clearness", I have indicated the pattern in Fig. l as only half formed, but it Will-be understood that the other half is cut byl a shear in the same manner. lln other words, a pair of shearing devices are employed, each cutting one half' rllhe operationv of the machine as a whole will now be briefly described.

rllhe rollers 70 being intermittently driven in a suitable way, and the shears operating continuously, as above mentioned, the blanks, previously coated with paste and cut to the shape shown in Fig. 6 will be fed from the platform 69 on to the extension 68, the blanks being so positioned thatv the radial edge or tongue e lies parallel with the beveled edge 68a of the extension, and projecting slightly over. such edge. The machine being driven by the pulley 5, intermittent rotation is imparted to the shaft 40 and thus in turn to the crank 66. As the crank travels from art and forms no part of the present inven- '1W tion.

the position shown in Fig. 2 to that illus trated in Fig. 3, .the carriage is advanced along the Ways and reaches the position shown in Fig. 3 with the finger 5l raised, as

in the direction shown by the arrow in Fig. 3, the first initial movement serves to swing the leverflS on its pivot and thus bring the linger 5l down into Contact with the presser plate 53, thereby clamping or gripping the edge of the blank between the finger and plate. `lt will be noted that the blank is so positioned relative to this gripping means that the tongue e thereof projects slightly beyond the edge of the presser )late rll`he mandrel 13 at this moment eing at rest with the slotvlfl therein in the relative position shown in Figs. 1 and 5, the carriage begns its backward or return movement carrying the blank with it. llVhen the finger 5l desiended upon the plate 53, the deflector 52 carried thereby engaged the flap or portion ll of the blank and bent or pushed it downward out of the plane of the tongue e, as clearly shown in F ig. rlhe purpose of this is to cause the ap l to clear the end of the mandrel so as not to interfere with the entrance of the tongue e into the slot 13a. lherefore, when the carriage, bearing a blank held as described, travels back toward the mandrel, the tongue e is drawn endwise into the slot 13, as clearly shown in Fig. 5, while the flap B rests against'the side of the mandrel, as indicated in dotted lines.

At this moment, the Wiper is in the position shown in Figs. 7 and 9, that is to say, it is immediately under the presser plate, but is held by the cam track-24 out of Contact with the mandrel so that the flap B enters between the Wiper and the mandrel, as illustrated in Fig. 9. After the carriage has reached this position, it momentarily remains at rest and at this instant, the mutilated ear 35 turns the Geneva pinion 33 throug half a revolution in such a manner as to cause the pin and slot 32 and 31 to rock' the arm 27 upwardly and thus oscillate the drum 14, thereby causing the Wiper to .make a half revolution underneath the mandrel. As the wiper begins to move from the position shown in Fig. 9 in the direction of the arrow, the cam track 24 permits the springs 19 to move it in toward the mandrel, with the result that it presses dowm upon and wipes over the liap B, thus pasting it smoothly on to the mandrel, as shown in Figs. 8 and 10. lln Fig. 10, the wiper is shown in the operative position, in substantial contact with the surface of the mandrel, while in Fig. 8, the wiper has been Slightly lifted from the mandrel. The movement of the wiper continues in the direction of the arrow in Fig. 10 until it reaches the position shown in dotted lines in said ligure, in which position the cam track 24 has again moved it clear of the mandrel. lt will therefore be seen that the wiper starts from 'a position of rest in which it is spaced from the mandrel, immediately comes into conta-ct with the mandrel and performs its wiping Leraars operation, pasting the flap to the mandrel, and is then again lifted from the mandrel so that the latter can rotate freely.

J ust so soon as the wiper has reached the position shown in dotted lines in Fig. 10, the mutilated gear 7 and Geneva pinion 8 come into play so as to cause the spindle 12 and mandrel 13 to rotate rapidly a number ofv times. This has the effect of winding the blank around the mandrel over the flap B, the tongue e being securely held in the groove 13a so that the blank is positively driven. rllhis tongue being of normal thickness is strong and not easily deformed and therefore operates etiiciently to hold the blank in position. T he winding of the blank around the mandrel is, of course, produced by the presser plate 53 bearing against the blank as 'the mandrel revolves, such presser plate, as before-explained, being resiliently urged toward the mandrel by means of the spring 56. A

The result of the above described operation is that the flap B forms a part of the inner surface of the cone adjacent its base, the feathered or deckle edge b of this flap being united with the inner wall of the cone in such a manner as to constitute a smooth and practically invisible joint. Between this flap and the apex of the cone extends the tongue e and while this is of normal thickness, it is in such a position within the cone that a joint of this nature is immaterial.

lin Figs. 7 and 8 it will be observed that the slot or groove 13*1 does not extend the entire length of the conical surface of the mandrel, but terminates at a point 13 short of the base 13C. rlhe result of this is that the mandrel presents a'smooth unbroken surface between the points 13 and 13c so that the cone can be trimmed by means of a cutter disk which may be brought to bear against the cone in a transverse plane, such as indicated at 13b,- a slight groove being usually formed in the mandrel at this point to receive the edge of the cutter disk. A suitable stripper removes the finished cone l from the mandrel.

lt will thus be seen that l have provided automatic mechanism for manufacturing paper cones, such mechanism gripping and holding the cone by means of a tongue of dii - winding refiners ing such a bla-nk around a cone shaped man-l drel, with such deckleedge portion inside. 2i rllhe method of forming paperV cones which comprises placing on a conical 'mandrei a sector-shaped blank having substantially radial edges and a flap extending laterally from one of said edges, said flap having a deckle edge, wiping said flap down on the mandrel, and then winding the'blank around the mandrel over said flap.

3. 'llhe method of forming paper conesl from sector-shaped blanks having a radial tongue and a deokle edge flap adjacent thereto, which comprises drawing said tongue endwise into a longitudinal groove forme-d in the surface of a conical mandrel, whereby the blank is securely held, wiping down the said apjontothe mandrel, and then the blank around the mandrel over said Hap. s

d. lin the manufacture ofv paper cones from sector-shaped blanks having a flap projecting laterally fromone edge' thereof, and by means of a conical mandrel having a lon itudinal slot in its surface, the meth od of placing the blanksy on the mandrel which comprises drawing the radial edge of the blank adjacent the flap endwise into theslot, while deflecting the Hap to oneJ side to cause it to clear the tip of the mandrel.

5. Apparatus for forming paper cones from sector-shaped blanks having a substantially radial edge and a flap projecting laterally therefrom, comprising a conical mandrel having a slot in its surface, means for l drawing the said radial edge of thelblank endwise into said slot, and means for simultaneously deiiec-ting said' flap to one side to cause it to clear-the end of the mandrel.

prising a conical mandrel, means for secur ing a wet blank in position on said mandrel, and mechanism for wiping said flap down upon the mandrel. I

9. Apparatus for formingpaper VLcones fromA sector-shaped blanks having a flap projecting from one radial edge. thereof, comprising a conical mandrel, means for securing a wet blank in position on said mandrel, and means foriirst wiping said flap down upon the mandrel and then winding the blank around the same over said flap.

l0. Apparatus for forming paper cones from sector-shaped blanks having a flap j projecting from one radial edge thereof, comprising a conical mandrel, means for 'securing a wet blank in position on said mandrel, a wiperA adjacent the mandrel, means for causing the wiper to move partly around said mandrel, over said flap, while 1n substantial contact therewith, to wipe down said flap, and means for then causing said mandrel to rotate sov as to wind the blank laround the same.

11. Apparatus of the class described c0mprising a rotary mandrel, a wiper mounted to revolve around the same, means for positioning a blank of sheet material on the mandrel, means yfor causing the wiper to execute a partial revolutign to smooth down a portion of said blank, and means for subsequently causingvsaid mandrel to rotate to wind the blank therearound.

12. Apparatus of the class described com- 4 prising a rotary mandrel, a wiper mounted to revolve around the same, and means for causing said wiper to substantially engage said mandrel during a part of its angular travel, and to move out of contact there-` with during'another part of such travel.

13. Apparatus of the class ydescribed com- 6. Apparatus for forming paper cones 'rising a rotary mandrel, a wi ermounted from sector-shaped blanks having a substantially radial edge and a flap projecting laterally therefrom, comprising a conical( mandrel, and means Jfor gripping the blank -mandrel-having a longitudinal slot,A and' and feeding it to the mandrel, said means comprising a pivoted finger having a deflectlng member adapted to engage said iiap and press it totone side.,

, Apparatus :for forming paper cones from sector-shaped blanks having' a substantially'radial tongue, and a laterally projecting portion located between, the end of the tongue and the curved edge of the sector, said apparatus comprising a conical mechanism for drawing said tongue endwise into. said slot while deiecting said laterally projecting portion away from the slot.

8. Apparatus for forming paper cones',

from sector-shaped blanks having a nap profleeting from one radial edge thereof, comto revolve around the same, sai wiper being normally at rest and spaced away' from the surface of the mandrel, and means for causing said wiper to lirst move into substantial contact with said mandrel, travel partly around the same, and then move-out ofengagement therewith, whereby said mandrel cone adjacent the ln testimony whereof I a lmysignature.` i.

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